Meta Downhole Limited

Schlumberger Technology Corporation

Schlumberger Technology Corpoation

Morphpackers Limited

Read Well Services Limited

Schlumberger B.v.

Andrew John Gorrara

Peter Wood

Fraser Louden

Duncan James Trinder

Stuart Berry

Paul Hazel

Neil Philip Thomson

Neil Thomson

A zonal isolation device in the form of an active external casing packer is provided which includes a tubular section such as a casing or liner and at least one sleeve member positioned on the exterior of the casing or liner and sealed thereto. The method detailed herein provides zonal isolation by use of a pair of spaced apart sleeve members during a frac operation where frac fluid is supplied to a zone (in between the pair of sleeve members) requiring to be frac'd, where the frac pressure acts not only on the outside of the zonal isolation device but also on the interior of the sleeve member to enhance the seal provided thereby.

Active external casing packer (ECP) for frac operations in oil and gas wells

A tubular portion apparatus () to be secured and sealed to another tubular () is described as is a method of securing and sealing a tubular portion () to an existing downhole tubular () such as a casing string (). The tubular portion () comprises a central portion (), an upper () and a lower () portion adjacent to the central portion () along a longitudinal axis of the tubular portion (). The tubular portion () is formed from a main material and an additional material to strengthen the upper () and the lower () portion of the tubular portion ().

Apparatus and a method for securing and sealing a tubular portion to another tubular

A tubular assembly is disclosed for use in a wellbore () of an oil, gas or water well, typically for landing a downhole device in the wellbore. The assembly has a sleeve () adapted to receive the body of the downhole device. The sleeve is deployed into a conduit in the wellbore and expanded, so that the outer circumferential surface of the sleeve is radially expanded against the inner surface of the conduit. The sleeve has a bore with an inner circumferential surface comprising an inwardly facing formation adapted to engage with an outwardly facing formation on the body of the downhole device when the body of the downhole device is disposed in the bore of the sleeve. The sleeve is typically deployed in the wellbore at the desired location and is radially expanded by an expander device () that is deployed within the bore of the sleeve. The expanded sleeve plastically deforms and retains its expanded configuration after the radial expansion force is removed from the sleeve. The sleeve provides a modular anchoring or landing point in the wellbore that can be retrospectively set in the conduit at different locations, and various downhole devices can then be deployed into the sleeves at predictable depths and a reliable connection can be made with the sleeve. The assembly can typically pass through a smaller diameter before being morphed to seal and anchor in a larger diameter.

Tubular assembly and method of deploying a downhole device using a tubular assembly

A zonal isolation device () in the form of an active external casing packer is provided which includes a tubular section such as a casing or liner () arranged to be run into and secured within a larger diameter generally cylindrical structure such as an open borehole (). At least one sleeve member () is positioned on the exterior of the casing or liner and is sealed thereto and at least two deformable band members () are provided around and are bonded to the outer circumference of the sleeve member. The sleeve member and the at least two deformable band members is/are expanded into place against the inner circumference of the open borehole by increasing the pressure within the sleeve member. The method detailed herein also provides zonal isolation by use of a pair of spaced apart members during a frac operation where frac fluid is supplied to a zone (in between the pair of sleeve members) requiring to be frac'd, where the frac pressure acts not only on the outside of the zonal isolation device but also on the interior of the sleeve member to enhance the seal provided thereby.

A method of connecting a first tubular member to a second tubular member located in a wellbore, the second tubular member including an upper end portion which has a greater diameter than the diameter of the first tubular member, the method comprising: lowering the first tubular member into the wellbore until the first tubular member is located at least within the bore of the upper end portion of the second tubular member; and expanding the first tubular member until the first tubular member is sealingly connected to the second tubular member.

Expandable liner tieback connection

A downhole expandable liner hanger apparatus for extending the length of an existing tubular such as a casing or liner string is described. The apparatus comprises a tubular portion and a securing and/or sealing means for securing the tubular portion to the existing tubular such as a casing string to thereby extend the length of the existing tubular and preferably simultaneously provide a sealed coupling between the tubular portion and the existing tubular. A first part or a length of the tubular portion preferably comprises a first sidewall thickness and a second part or length of the tubular portion is located adjacent the first part, where the second part comprises a second sidewall thickness, said first sidewall thickness being less than the second sidewall thickness.

Expandable liner hanger

An apparatus and method, particularly useful for isolating zones in a hydrocarbon wellbore. The apparatus includes a tubular section, such as a length of casing or liner tubular, arranged to be run into and secured within the wellbore which may be open hole or already cased. At least one sleeve member is positioned on the exterior of the tubular section and is sealed thereto. A pressure control device, which typically consists of a pressurised hydraulic fluid delivery device, can be used to increase the pressure within the sleeve member to cause the sleeve member to move outwardly and bear against an inner wall of the wellbore.

Growing community of inventors

Stonehaven, United Kingdom

Andrew John Gorrara